Abstract: The ethics of sustainable land use indwells in the relationships between“man and land”and between“man and man ”． It is an important complementary means for the economic，legal and administrative management of the sustainable land use．Any the action of land use should follow the ecological benefit，economical benefit and social benefit．In pursuit of the land use ethics，the three benefits can be enhanced and the land resource can be promoted to be sustainable used．The idea of the land use ethics is a conjunctive result from the ecological ethics，economical ethics and,social ethics in the land use．Its achievement depends on penetration of the ecological idea through all social and economical actions．